there is no "next" thing to do, but I would suggest getting other basics down like manualing, and maybe 180 bunnyhops and learn how to ride fakie. if you want to learn how to hop higher, you're going to have a build a little muscle for one, mainly forearm muscle, but that comes with practice. Lean back farther when you're about to hop and pull up the front end as high as you want to go, then hop the back end up to the same elevation as the front.